Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4WFO callsign genealogy
Currently held by Arno, John T
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KM4WFO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4WFO.
- ARNO, JOHN TSCgranted 2016-09-10cancelled 2018-12-14